--- title: "JTo vs 64s: preflop equity" url: "https://georgelipoker.com/equity/jto-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/jto-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "JTo is a big favorite over 64s before the flop: 61.78% to 38.22% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/jto-vs-53s.md", "https://georgelipoker.com/equity/jto-vs-43s.md", "https://georgelipoker.com/equity/t9s-vs-64s.md"] --- # JTo vs 64s: preflop equity JTo is a big favorite over 64s before the flop: 61.78% to 38.22% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, JTo is ahead of 64s by 23.56 points of equity, 61.78% to 38.22%. ## JTo against 64s: the numbers **Exact preflop results for JTo against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | JTo | 61.206 | 1.144 | 37.650 | 61.778 | | 64s | 37.650 | 1.144 | 61.206 | 38.222 | One side is an offsuit hand, the other is a suited hand. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other. A 23.56 point lead is real, and 64s still takes about 377 of every 1,000 deals outright. About 1.14% of boards chop the pot, which is why equity sits slightly above the win figure for both hands. In the ranking of all 169 starting hands, JTo is number 57 and 64s is number 138. **Boards behind the percentages: 82,190,592 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | JTo | 50,306,000 | 940,000 | 30,945,000 | | 64s | 30,945,000 | 940,000 | 50,306,000 | 48 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **JTo against 64s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | JTo | 1.616 | 1.634 | 2.656 | 0.619 | | 64s | 0.619 | 2.656 | 1.634 | 1.616 | The last column is the smallest pot odds, written as a pot-to-call ratio, at which a call breaks even with this equity. ## Who is ahead on which flops Split by what the flop looks like, JTo peaks at 69.92% on rainbow flops topped by a ten or better and bottoms out at 38.31% on low rainbow flops (nine high or lower). Watch for low rainbow flops (nine high or lower): on those flops 64s holds the better equity. **JTo against 64s by flop texture, in percent** | Flop | Share of flops | JTo wins | Ties | 64s wins | JTo equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.717 | 69.605 | 0.619 | 29.776 | 69.915 | | Rainbow, nine or lower | 6.313 | 38.017 | 0.594 | 61.389 | 38.314 | | Two-tone | 46.667 | 60.213 | 0.582 | 39.205 | 60.504 | | Monotone | 5.212 | 58.514 | 2.656 | 38.830 | 59.842 | | Paired | 17.091 | 61.160 | 3.180 | 35.660 | 62.750 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand Start from the random-hand figures, 55.25% for JTo and 41.33% for 64s. This opponent changes them by +6.53 and -3.11 points. **JTo and 64s here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | JTo, all flops | 61.778 | 55.248 | +6.530 | 1.11819 | | JTo, rainbow, ten or higher | 69.915 | 55.248 | +14.667 | 1.26548 | | JTo, rainbow, nine or lower | 38.314 | 55.248 | -16.934 | 0.69349 | | JTo, two-tone | 60.504 | 55.248 | +5.256 | 1.09513 | | JTo, monotone | 59.842 | 55.248 | +4.594 | 1.08315 | | JTo, paired | 62.750 | 55.248 | +7.502 | 1.13579 | | 64s, all flops | 38.222 | 41.333 | -3.111 | 0.92473 | | 64s, rainbow, ten or higher | 30.085 | 41.333 | -11.248 | 0.72787 | | 64s, rainbow, nine or lower | 61.686 | 41.333 | +20.353 | 1.49242 | | 64s, two-tone | 39.496 | 41.333 | -1.837 | 0.95556 | | 64s, monotone | 40.158 | 41.333 | -1.175 | 0.97157 | | 64s, paired | 37.250 | 41.333 | -4.083 | 0.90122 | ## Does a shared suit matter? Of the deals of this matchup, 24 share a suit (JTo at 62.51%) and 24 do not (61.05%). JTo does better with a shared suit, by 1.46 points. **JTo against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | JTo wins | Ties | 64s wins | JTo equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 24 | 50.00 | 61.915 | 1.187 | 36.898 | 62.508 | | No shared suit | 24 | 50.00 | 60.498 | 1.101 | 38.401 | 61.048 | ## How often this matchup comes up Counting specific cards, JTo against 64s appears in 48 of the 1,624,350 ordered heads-up deals (0.0030%), and in 96 when the seats are swapped too (0.0059%). ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average JTo takes back $123.56 of it, which is $23.56 more than it put in, and 64s takes back $76.44, $23.56 less than it put in. Think in thousands: about 612 of 1,000 go to JTo, about 377 go to 64s, and about 11 are chopped. ## The same matchup from the other side 64s versus JTo is this same page seen from the other hand: 38.22% for 64s, 61.78% for JTo. ## Keep exploring Try JsTh against 6d4d in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open JsTh against 6d4d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=JsTh&p2=6d4d) - [JTo combos](https://georgelipoker.com/combos/jto.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [JTo vs 53s](https://georgelipoker.com/equity/jto-vs-53s.md) - [JTo vs 43s](https://georgelipoker.com/equity/jto-vs-43s.md) - [T9s vs 64s](https://georgelipoker.com/equity/t9s-vs-64s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed We counted every case. Each suit pattern of the 48 specific JTo against 64s deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [JTo vs 53s: preflop equity](https://georgelipoker.com/equity/jto-vs-53s.md) - [JTo vs 43s: preflop equity](https://georgelipoker.com/equity/jto-vs-43s.md) - [T9s vs 64s: preflop equity](https://georgelipoker.com/equity/t9s-vs-64s.md)